Crotalaria ferruginea Benth. (syn: Crotalaria bodinieri H.Lev.; Crotalaria ferruginea var. major Baker; Crotalaria ferruginea var. pilosissima (Miq.) Baker (ambiguous synonym); Crotalaria ferruginea var. pilosissima Benth. (ambiguous synonym); Crotalaria lonchophylla Hand.-Mazz.; Crotalaria pilosissima Miq.; Crotalaria rufescens Franch.);
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Bangladesh; Bhutan; China; India; Indonesia; Laos; Malaysia; Myanmar; Nepal; Philippines; Sri Lanka; Taiwan; Thailand; Vietnam as per Catalogue of Life;
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India (N) ; Andhra Pradesh ; Arunachal Pradesh; Assam; Bihar; Gujarat; Himachal Pradesh; Karnataka ; Manipur; Meghalaya; Nagaland; Orissa; Rajasthan; Sikkim; Tripura ; Uttar Pradesh; West Bengal and other countries as per ILDIS;
.
Three four hairy species are quite confusing and we have to follow the following keys from
Flora of Peninsular India as below:
36 Leaves elliptic lanceolate or oblong, more than twice as long as broad
  38 Stipules prominent ovate lanceolate or lanceolate
    39 Stem with spreading hairs
    41 Pods slightly exserted, 15-20 seeded   …. C.hirta
    41 Pods much exserted , 20-35 seeds
      42 Leaves villous beneath; bracts often 3 lobed; pods subsessile  ….. C.mysorensis
      42 Leaves appressed pubescent beneath; bracts simple; pods shortly stalked …. C.ferruginea
38 Stipules minute or 0.
  43 Pods as long as or shorter than calyx
    44 Calyx to 0.8 cm long; upper two lobes connate except at tip; pods globose … C.linifolia
    44 Calyx to 2.5 cm long; lobes connate at base only; pods oblong …. C. calycina
.

Erect branched herbs, silky pubescent. Leaves to 5.5 x 1.5 cm, oblong, obovate, apex obtuse, apiculate, base cuneate, pubescent; petiole 1 mm, stipule 0.5 cm, lanceolate, ciliate. Racemes lax, 6-8 flowered; flowers yellow, pedicels 0.5 cm; sepals connate at the base, 1.5 cm, lanceolate, tomentose; keel sepal linear; standard petal 17 x 8 mm, orbicular; wings 10 x 5 mm, oblong, obtuse; keel united, 1.5 cm long, enclosing the stamens and pistil; anthers dimorphic, larger 3 mm, smaller 0.3 mm; ovary 4 mm, oblong, style constricted at the bent, 1.3 cm long, puberulus, stigma oblique. Pod 3 x 1 cm, oblong, glabrous, shining; seeds many.

Flowering and fruiting: December-February
Dry deciduous forests
Indo-Malesia
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi)
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SK 2336 21 December 2019 : 12 posts by 2 authors. 10 images- 5 to 7 mb each.
Location: Nagarkot, Bhaktapur
Date: 24 October 2019
Elevation: 2076m.
Habitat: Wild
Crotalaria prostrata Rottler ex Willd. ??

Looks different from Crotalaria prostrata Willd. 

Keys in Flora of Bhutan at Crotalaria‎ lead me to (15. C. ferruginea Bentham), 16 (16. C. humifusa Bentham) & 17 (17. C. acicularis Bentham)
I am ignoring the following on further checking these at
Crotalaria humifusa Benth. as per details herein &
Crotalaria acicularis at FOC illustration, POWO  Florida plants  YDHVN
I think it is close to Crotalaria ferruginea as per GBIF  High resolution specimen  BGO  YDHVN

Thank you …! Crotalaria ferruginea Graham ex Benth.


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Fabaceae (Faboideae) Fortnight :: Crotalaria for id :: Morni :: NS OCT 23/23 : 4 posts by 3 authors. Attachments (5)
This images of this hirsute herb were recorded in Morni Hills, Haryana…
Crotalaria prostrata ?? Please suggest id…!


Pls. give some information on habit, stipules etc… & date pls


efi page on Crotalaria prostrata with 6 images from …


Crotalaria prostrata to me.


Thank you very much … for taking care. I agree with …, details are lacking, I will come back when I have something better to share….!!


Crotalaria hirta as per feedback another thread: Fabaceae (Faboideae) Fortnight :: Crotalaria calycina ?:: Morni Hills :: NS OCT 20/20


I think this will be Crotalaria ferruginea as per images and keys herein.




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SK540 05 JUN-2017:ID : 7 posts by 2 authors. Attachments (6)

Location: Relli River,Kalimpong, India
Date: 24 May  2017
Altitude: 2000 ft.

I also think so. Pl. check comparative images in efi site. 


Its Crotalaria L.


Yes it is already mentioned in the caption that it is Crotalaria but which one?


Could not find a match at comparative images at Crotalaria


Does look like Crotalaria alata to me
Has this ID not been considered?

Crotalaria alata has flat, rather winged stem, isn’t it ?


I tried again, but could not find match as per comparative images at Crotalaria


Please have a look at Crotalaria triquetra. It looks close.


I am not sure … if it matchs !


Looks different from images at Crotalaria triquetra
Also does not have any distribution as per ILDIS


It  is late evening, I collected during my posting at Sikkim and it is C. ferruginea, immediate response and am confident, please do match and intimate.


Yes, appears to match as per GBIF specimens from India- one and two.


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